Audemars Piguet 5900

The caliber 5900 is an automatic in-house movement developed by Audemars Piguet. It measures 26.2 mm in diameter and 3.9 mm in height, has 29 jewels, and operates at a frequency of 28,800 vibrations per hour with a power reserve of 60 hours. It features a sweep seconds hand and a date complication, and it powers models 15551, 15550, 77410, 15552, and 77605.